> For the complete documentation index, see [llms.txt](https://docs.flytbase.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flytbase.com/pre-flight-modules/planning/mission-planning/mission-breakpoint.md).

# Mission Breakpoint

### Mission Breakpoint

The Mission Breakpoint feature is designed to address interruptions during missions. These interruptions can result from technical, operational, environmental, or safety concerns.

### Common Causes of Mission Interruptions:

1. **Hardware Issues:** Malfunctions such as low battery, faulty GPS, rotor or propeller damage, or sensor failures.
2. **Communication Failures:** Signal disruptions between the drone and its docking station.
3. **Manual Intervention:** Operator overrides for perceived risks or manual maneuvers.
4. **Mission Planning Errors:** Misconfigured waypoints, altitude settings, or geofencing boundaries.
5. **Radio Frequency Interference (RFI):** Disruptions from nearby electronic devices or systems.
6. **Return to Home (RTH) Activation:** Triggered by low battery, signal loss, or safety thresholds.
7. **Fail-Safe Mode:** Automatic halting of missions due to activation of device fail-safes or weather conditions.

### Breakpoint Overview:

* A **Breakpoint** represents the exact progress of completion at which the drone aborts its mission due to a voluntary or involuntary event.
* The Mission Breakpoint feature enables users to resume incomplete missions from the last achieved point rather than restarting from the beginning. Resumption are based on the type of mission:
  * **Path Mission:** Resumes from the last waypoint reached before the interruption.
  * **Grid Mission:** Resumes from the last sharp angle covered during the previous flight.

### Using the Breakpoint Feature:

1. **Execute a Mission:** Start a pre-planned mission from the **Drone Control Panel**. [Refer the FlytBase Flight Execution section to execute a pre-planned mission.](/in-flight-modules/flight-execution.md#how-to-execute-a-pre-planned-mission)

<figure><img src="/files/ZikrSATF7cxyvuHywdS6" alt=""><figcaption><p>Executing a pre-planned Mission</p></figcaption></figure>

2. **Abort Mission:** Click the **RTH** (Return to Home) button on the drone control panel to safely abort and return the drone to the dock.

<figure><img src="/files/6c1h1Ztq6qJIdXSC6AD7" alt=""><figcaption><p>Using the RTH command to abort a live mission</p></figcaption></figure>

3. **Access Saved Missions:**
   * Navigate to the **Mission** tab in the drone control panel. The **Mission** tab will display a small blue dot indicating that there are some incomplete missions.
   * Incomplete missions are indicated with the label **Incomplete** and display relevant details such as the percentage of mission left and estimated completion time.
4. **Resume Mission:**
   * Select the desired incomplete mission and then click 'Resume'
   * Confirm the safety checklist parameters and click 'Launch'

<figure><img src="/files/2kOABGL4xEbqrqksSSB1" alt=""><figcaption><p>Resuming incomplete missions from the operations dashboard</p></figcaption></figure>

5. **Completion:** The drone will restart from the designated Breakpoint:

* For Path Missions: The mission resumes from the last waypoint reached before the interruption.

<figure><img src="/files/icP6MkHZ5qd7ftl99at5" alt=""><figcaption><p>Drone resuming the incomplete Path mission</p></figcaption></figure>

* For Grid Missions: The mission esumes from the last sharp angle covered during the previous flight.

<figure><img src="/files/ZSaVxnAUy80RTin4axtz" alt=""><figcaption><p>Drone resuming the incomplete Grid mission</p></figcaption></figure>

{% hint style="info" %}
You can restart any incomplete mission by clicking the **Reset** button next to it in the **Missions Tab** of the **Drone Control Panel**.
{% endhint %}

### Scenarios Where Breakpoint Can Be Used:

* Mission aborted due to technical, operational, or environmental issues.
* Missions interrupted by manual **RTH** action.
* Manual intervention using the **STOP** button followed by the **RTH** command.

### Scenarios Where Breakpoint Cannot Be Used:

* Deleted missions.
* Mission where the mission parameters have been modified.
* Missions that are aborted before the drone reaches the first waypoint.
* Missions reset via the Operations Dashboard.

### Resuming Missions Mid-Air:

If the mission is stopped mid-flight for **manual control** or a **Go-To-Location (GTL)** command, it can still be resumed from the last waypoint.

{% hint style="info" %}
If **RTH** is initiated, resumption is only possible after the drone returns to the dock.
{% endhint %}